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Vehicle behavior track detecting method based on video image

A video image and detection method technology, applied in image enhancement, image analysis, image data processing and other directions, can solve problems such as being unsuitable for intelligent transportation and difficult to capture the trajectory of moving vehicles, and achieve improved detection efficiency, cost savings, and simple operation. easy effect

Inactive Publication Date: 2017-08-08
TIANJIN XINTIAN XINGYI MEASUREMENT & CONTROL TECH CO LTD
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Problems solved by technology

This method can only detect the speed of moving vehicles, it is difficult to capture the trajectory of moving vehicles, and it is also not suitable for the needs of intelligent transportation

Method used

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  • Vehicle behavior track detecting method based on video image
  • Vehicle behavior track detecting method based on video image
  • Vehicle behavior track detecting method based on video image

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Embodiment Construction

[0054] Combine below Figure 1-4 The preferred embodiments of the present invention are further described:

[0055] A vehicle behavior trajectory detection method based on video images, which includes a fusion of GMM-PRLK multi-moving target automatic detection and tracking algorithm, and adds a template update mechanism to deal with the turning and Deformation and other phenomena, the whole process can be automatically detected and tracked without supervision; the steps are as follows:

[0056] Step 1, setting the detection area of ​​the vehicle in the video image;

[0057] Step 2, use Gaussian mixture model (GMM) to carry out background modeling;

[0058]Step 3. Use the background difference method to detect moving vehicles. After knowing the background model in advance, first calculate the background model B(x, y) and the current image f k The difference of (x, y), then for the difference image f d Thresholding (x,y) and performing Blob analysis on the thresholded image...

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Abstract

The invention discloses a vehicle behavior track detecting method based on a video image. The method comprises a fused GMM-PRLK multi-moving-target automatic detecting and tracking algorithm. Furthermore a template updating mechanism is added for handling phenomena of turning, deformation and the like in a driving process of a moving vehicle. Unsupervised automatic detecting and tracking can be performed in the whole process. In a three-dimensional track reconstruction process, an improved stereo matching algorithm based on an SURF characteristic is utilized. An improved KNN-RANSAC algorithm is utilized for performing characteristic point matching and a relatively larger number of mis-matching points can be eliminated. Compared with an induction coil and radar ultrasonic wave, the vehicle behavior track detecting method based on the video image has advantages of greatly improving detecting efficiency, obtaining more data information, realizing simple operation, saving cost and reducing labor intensity.

Description

technical field [0001] The invention relates to the field of vehicle detection equipment in traffic, in particular to a method for detecting vehicle behavior tracks based on video images. Background technique [0002] With the economic growth, the rapid development of the automobile industry, the rapid increase in the number of automobiles, the deteriorating traffic conditions, and frequent accidents, we need to build an intelligent transportation system to obtain more data information for our reference and use. Intelligent traffic monitoring and management. State of the art: [0003] The current detection methods mainly include: [0004] Induction coil detection. This method can only detect moving vehicles, and cannot further track them to obtain their trajectory. Moreover, the installation of induction coils will damage the road surface. The later maintenance costs are high, and the use is not flexible enough. It is difficult to meet the current intelligent traffic requ...

Claims

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Application Information

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IPC IPC(8): G06T7/20G06T7/30
CPCG06T2207/10016G06T2207/30248
Inventor 隋修武
Owner TIANJIN XINTIAN XINGYI MEASUREMENT & CONTROL TECH CO LTD
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